2013 Fiscal Year Final Research Report
Development of a system of enhanced plant growth by gene transfection of the fastest myosin.
| Project/Area Number |
24658002
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Breeding science
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| Research Institution | Chiba University |
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Principal Investigator |
ITO Kohji 千葉大学, 理学(系)研究科(研究院), 准教授 (50302526)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | シロイヌナズナ / 車軸藻 / 原形質流動 / ミオシン |
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| Research Abstract |
Cytoplasmic streaming is active transport widely occurred in plant cells. Although it has been revealed that cytoplasmic streaming is generated by organelle-associated myosin-XI sliding along actin cables, the fundamental function in plants remains unknown. We generated high-speed chimeric myosin XI by replacing the motor domain of Arabidopsis thaliana myosin XI-2 with that of Chara corallina myosin. Surprisingly, the plant size of the transgenic Arabidopsis high speed chimeric myosin XI-2 was higher than that that of the wild-type plant. This size change correlated with acceleration of cytoplasmic streaming. These results strongly suggest that cytoplasmic streaming is a key determinant of plant size. Furthermore, because cytoplasmic streaming is a common system for intracellular transport in plants, our system could have applications in artificial size control in plants.
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[Presentation] ミオシンXIの1分子解析2012
Author(s)
森川高光,岩城光宏,伊藤光三,木村篤,富永基樹,池崎圭吾,小森智貴,藤田恵介,中野明彦,山本啓一,柳田敏雄
Organizer
日本植物学会第76回大会
Place of Presentation
兵庫県立大学
Year and Date
2012-09-15
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